package com.dtz.order.controller;

import com.dtz.entities.CommonResult;
import com.dtz.entities.Payment;
import com.dtz.order.lb.LoadBalancer;
import com.netflix.appinfo.InstanceInfo;

import lombok.extern.slf4j.Slf4j;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.util.List;

import javax.annotation.Resource;

/**
 * @author 陶志胜
 * @Date 2021/3/15
 */
@RestController
@Slf4j
public class OrderController {

    @Resource
    private RestTemplate restTemplate;

    // public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://cloud-payment-service";
    
    @Autowired
    public DiscoveryClient discoveryClient;
    
    @Autowired
    public LoadBalancer loadBalancer;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment>   create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment, CommonResult.class);  //写操作
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB(){
       List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
       if (instances == null || instances.size() <= 0){
           return null;
       }
       ServiceInstance serviceInstance = loadBalancer.instance(instances);
       URI uri = serviceInstance.getUri();
       return restTemplate.getForObject(uri+"/payment/lb",String.class);
   }

}
